Reflector.



P. M. HOTGHK IN. REFLECTOR.

' APPLICAITIONJJLED JAN. 2. 1915.

' iL atented May 8,1917.

3 SHEETS-SHEET l- P. M. HOTCHKIN.

REFLECTOR.

APPLICATION FILED JAN- 2.

Patented May 8, 1917.

3 SHEETSSHEET 2.

UNITED s'r s P T-E: s1 OFFICE."

rum in. no'rcnxnv, or cnicaeo inlmors.

REFLECTOR.

ToaZZ whom it may concern! Be it known that I, PAUL M. HoronKIN, a.citizen of the United States, residing at lGhicago, in the county ofCook and State of 'Illino1s, have invented certain new and usefulImprovements onfReflectors; as set'forth in the annexed speeification.

My'invention relates to reflectors in gen- 7 eral, that is reflectorsfor various forms of ghting systems, such as for the indirectfor'headlights of va- 'l umination of rooms, 'rious ty es, for desk orreading lamps and in fact or any place where it 1s desired to controlthe direction of the light waves radiating fro'ma suitable lightsource.The principal object of my invention is to con-l struct a reflectorsothat'the light waves may be positively directed to certain areas and.c'onfined yvithin a desired space Another 20 object is to so arrangethe reflecting surfaces of my device that the dazzling beam of lightwaves from a source of illumination such as an electric lamp of highcandle power is broken up' and spread out so that they may be moreequally distributed withinthe area Still another object of my inventionis the provision of a reflecting body for automoe bile headlights thatwill direct and confine the light upon the roadway and thereby avoid theglare so prevalent in such structures, the existence of which isdangerous to pedestrians as well as to drivers of machines moving in theopposite direction toward said light. .The ordinances of numerousmunicicommonly known as glaring headlights and itis, therefore, anobject of my invention quirements of these regulations by breaking upthe beams of light waves andcontrolling the direction thereof.

' Other objects of my invention are the pro vision of a reflector thatis both neat and attractive" in ap arance, eflicient in performing thearticularfunctions for whichit is designedijand which is inexpensive tomanufacture-so that it does not materially j add to the cost ofmanufacture;

The e and other objects I referto accomlish by the means and in t emanner heremafter fully described and as more particularly pointedoutthe claims, reference being had' to the accompanying drawings,

Specification of Letters Iatentf Application filed January 2, 1915. s ndL No. 4.

I on line 33, of Fig.1.

' palities now prohibit the use of whatare to provide a reflector whichwill meet the re- Patented May 8, 191 '7.

forming a pa rt ofthis specification, in which snnilar refe rencecharacters indicate the same parts throughout the various figures.Figure 1 is a vertical front elevation of one form of 1 my improvedreflector.

.Fig. 2 is a top plan thereof.

Fig. 3 is a central vertical section taken Figs. 4 and 5 are viewssimilar to Fig. 3 of a slightly modified form of reflector.

Fig. 6 is 2 planview of a reflector made in. accordanc e with myinvention, the main reflector beit g truly spherical.

Fig, 7 is view similar to Fig. 3 of another modifi ad form of myreflector.

Fig. 8 illustrates one manner of forming or, shaping uhecorners ofa'refiector body made in accc rdance with my invention.

Fig. 9 is a top plan of still another modified'form of ny invention inwhich the lower member is p: lrabolic..

Fig. 10 is a detailed view of my reflector illustrating i he mannerofusing the same on anindir'ct rall fixture.

Referring more particularly to Figs. 1, 2 and 3 of the lrawings, it willbe seen that my reflector com prises a shell, preferably formed of asingle piece of suitable material. The 'lowermembar of thisshellpreferably consists of a segment of-a hemisphere, the outer or for vardwall pf which is cut away and the rear portion 21 0f which curvesupwardly in at. arc struck from a center-in advancei of thoverticalplane of the 'front of said shell. The-top wall 22 ofthe shellc'0n..stituting the base line of the-hemisphere is preferably disposed in ahorizontal plane and the front 'or forward edge thereof is curvature ofthe back portion 21. 'At'the center of the rearportion of the top andforming a (ontinuation of the upper rear portionof t] Le segmentalmember21 a dome shaped or h allow hemispherical housing 23 is formedi withinwhich is arranged a l ght medium 24, preferably in the, form of, an incandes'cen't e ectric bulb. This hemispherical of housing 21 l thatthedirect lightwaves rostraight whi [e the rear edge conforms to thehousing 23v a ndthe interior'of the se enta1' member 21 are preferablyconstructe so as to reflect th {light waves therefrom. The light element 24'is so disposed in the dome ceeding the! efrom. will not be visiblem directly in' irontof, the reflector as will be 26 and the segmentallower portion 28 curved downwardly. as well as. outwardlyin .the form ofa compound curve as seen at 28-.

. The reflector just described, when viewed from the top (Fig. 6), willbe seen to have the segmental lower member 27 thereof formedof a truesemicircular outline or curvature. m

In Fig. '7 1 illustrate a reflector constructed substantially in thesame manner as shown in Fig. 3 with the exception that the uppermemberor housing 29, instead of be-' mg true hemispherical, is slightlyparabolic in shape. This is for the purposeof condensing the lightagainst the segmental member 30 and by shielding the direct light wavesthrough the medium of the forwardly extending top 31.

As seen in Fig. 9, the reflector body 32- modified by constructing itmay be further of. parabolic shape and by providing the top 33 thatcovers the same in a manner similar to that of the other structures; Theupper member or housing 34 'may be of either a true hemispherical orparabolic shape, as

desired.

' in systems where a wall bracket 35 I,.have-il1ustrated in Fig. 8 arefinement of the reflector shown in Fig. 1 wherein the corners may becurved as shown at 32 instead of being made sharp or angular as in saidFig. 1, the remainin portion of the reflector being of any of t e shapesheretofore described.

, Whilemy invention is primarily designedfor a reflector for automobileheadlights, the" structure is Well applicable to indirect light- 10 isused. ZI'eretofore the objection to; wall brackets i indirect li htinghas been that a portion of the lig t (was thrown against the verticalwall and not entirely against the ceiling. With my reflector the outeredge; of the top .22 will prevent the -waves of light reflected from thelower or outer portion of the segmental member from striking the wall,and by'a proper adjustment the shadow cast by brought into alinement theline attbe meeting surfaces'of the wall and ceiling, this directing allof the light waves to the ceiling as-indicated in the drawing. I

From the foregoing description it is; evithe scope of concave reflector(Fig.

this edge may be with or parallel to dent that the combined action ofthe light housing and the body portion of the reflector will secure the.partial condensing or focusin its pro ection in the desired directionbut also its even distribution throughout the area to be illuminated.

While I' have illustrated. and described certain specified forms of myinvention, it of course, will be obvious, to others skilled in the arttowhich it pertains, that various modifications and refinements thereofare possible without materially departing from the spirit of myinvention. sire 1t understood that all such modifications andrefinements are included within my invention as expressed in the claims.

What I claim as new is 1. A device for projecting light com rising asector of a concave reflector provided with a supporting plate-and asupplemental supported on said plate, the axis of which latter reflectoris at right angles to the axis of the first named reflector.

2. A device for projecting light comprising a plate closing said sector,and a sup= plemental reflector supported on said plate the axis of whichlatter reflector isat subof the light so as not only to secure Itherefore deing a sector of a hemis herical reflector havstantiallyright angles to the axis of the I first named reflector.

3. A reflecting device comprisinga substantially concave reflector, atop plate or shield extending from the front to the rearthereof andprovided with an opening, and

a concave reflector of relatively small dimensions mounted in saidopening and adapted to reflect a portion of the light waves from asuitable light source through said opening upon said first mentioned.reflector and a source of light mounted in said smaller reflector.

4. Areflecting device comprising a substantially concave reflector, atop plate extending from the front to the rear thereof and providedwithan opening, and a con-- cave reflector of relatively smalldimensions mounted in said opening the axis ofwhich is at right anglesto saidfirst mentioned concave reflector and adapted to reflect a ortionofthe 1i ht waves from a suitable h ht source through said opening uponsaid rst mentioned reflector, and a source of light mounted in saidsmaller'reflector.

5. A device for projecting light comprise,

ing a sector of a concave reflector provided with a supporting plate anda supplemental concave reflector supported on said plate the axis ofwhich latter reflector is at substan-- tially aright angle to the axisof the firstmentioned reflector.

6. reflecting device comprising a substantlally concave reflector, aplateextending from the front to the rearvthereof and provided with anopening, and a concave reflector of relatively small dimensions mountedin said 0 ening and adapted to reflect a portion 0 the light rays from asuitable light source through said opening upon said first-mentionedreflector, and a source of light within said device.

7; The combination with a reflector of 10 substantially concavecurvature in crosssection, of a plate the curvature whereof reflector tobe projected forwardly out of the latter.- a

' 8. The COIIlbl] lat-ion with a, reflector of concave curvatul e, of aplate having an edge the curvature (f which conforms to the 20 curvatureof said reflector and being provided with an opening adjacent its rearedge, and a con :ave reflector on'said plate above said opening.

In testimony vhereof I have hereunto set 25 my hand, this 2)th day ofDecember, 1914.

' PAUL M. HOTCHKIN. Witnesses:

E. K. LU: any, Jr., WM. I'IAR )LD EIOHELMAN.

